EP 1294215 A3 20041201 - Ballast for at least one incandescent lamp
Title (en)
Ballast for at least one incandescent lamp
Title (de)
Vorschaltgerät für mindestens eine elektrische Glühlampe
Title (fr)
Ballast pour au moins une lampe à incandescence
Publication
Application
Priority
DE 10146030 A 20010918
Abstract (en)
[origin: EP1294215A2] The device has at least two switch elements coupled together to form a first junction, a control circuit with at least one output for controlling the switch elements and an input for a dimming signal and a power transformer with primary connected to the first junction and secondary connected to at least one lamp. The control circuit varies the control signal's duty cycle and switching frequency depending on the dimming signal. AN Independent claim is also included for the following: a method of operating an inventive device.
IPC 1-7
IPC 8 full level
H05B 39/04 (2006.01)
CPC (source: EP US)
H05B 39/045 (2013.01 - EP US); Y02B 20/00 (2013.01 - EP US)
Citation (search report)
- [XP] WO 0169983 A1 20010920 - TRIDONIC BAUELEMENTE [AT]
- [X] DE 19543720 A1 19970528 - TRIDONIC BAUELEMENTE [AT]
- [A] EP 0357285 A2 19900307 - GARDENAMERICA CORP [US]
- [A] EP 0933979 A1 19990804 - ECLAIRAGE PUBLIC B E E P BUREA [FR]
- [A] EP 0435231 A1 19910703 - ZUMTOBEL AG [AT]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1294215 A2 20030319; EP 1294215 A3 20041201; EP 1294215 B1 20070314; AT E357126 T1 20070415; AU 2002301070 B2 20070712; CA 2403053 A1 20030318; DE 10146030 A1 20030403; DE 50209705 D1 20070426; JP 2003100475 A 20030404; JP 4177624 B2 20081105; TW 557472 B 20031011; US 2003052623 A1 20030320; US 6781324 B2 20040824
DOCDB simple family (application)
EP 02015003 A 20020704; AT 02015003 T 20020704; AU 2002301070 A 20020917; CA 2403053 A 20020913; DE 10146030 A 20010918; DE 50209705 T 20020704; JP 2002269635 A 20020917; TW 91115427 A 20020711; US 24527602 A 20020918